It usually does not grow over time and malignant transformation has not been reported.

CPA Lipoma is a rare tumor with an incidence of 10% of all intracranial lipomas and less than 0.14% of all CPA tumors. It has a tendency to infiltrate with splaying of 7th and 8th cranial nerves. Surgical excision is usually avoided due to intermingled nerve fibers and adherence to neural structures via fibrous elements.

The most common site for intracranial lipoma is interhemispheric fissure. Other sites are quadrigeminal cistern, pineal region, CPA, suprasellar cistern and sylvian fissure.